To find the radius of a circle given the circumference, we can use the formula for the circumference of a circle:
\[ C = 2\pi r \]
where \( C \) is the circumference and \( r \) is the radius.
Given that the circumference \( C \) is 70 feet, we can rearrange the formula to solve for the radius \( r \):
\[ r = \frac{C}{2\pi} \]
Now, substituting \( C = 70 \) feet and \( \pi \approx 3.14 \):
\[ r = \frac{70}{2 \times 3.14} \]
Calculating the denominator:
\[ 2 \times 3.14 = 6.28 \]
Now substituting this back into the equation for \( r \):
\[ r = \frac{70}{6.28} \]
Calculating the radius:
\[ r \approx 11.12 \]
So, the radius of the circle, rounded to the nearest hundredth, is approximately 11.12 feet.